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Why use #ifndef CLASS_H and #define CLASS_H in .h file but not in .cpp?
...essor, the check against FILE_H will be false, so it will immediately scan down to the #endif and continue after it. This prevents redefinition errors.
And to address your second concern:
In C++ programming as a general practice we separate development into two file types. One is with an extensi...
How to Rotate a UIImage 90 degrees?
...M (context, radians(-90));
} else if (orientation == UIImageOrientationDown) {
// NOTHING
} else if (orientation == UIImageOrientationUp) {
CGContextRotateCTM (context, radians(90));
}
[src drawAtPoint:CGPointMake(0, 0)];
UIImage *image = UIGraphicsGetImageFromC...
How to avoid reinstalling packages when building Docker image for Python projects?
...ep 3 : RUN pip install -r requirements.txt
---> Running in 08188205e92b
Downloading/unpacking pytest==2.3.4 (from -r requirements.txt (line 1))
Running setup.py (path:/tmp/pip_build_root/pytest/setup.py) egg_info for package pytest
....
Cleaning up...
---> bf5c154b87c9
Removing intermediate ...
Why does C++ compilation take so long?
...ticably faster than C++. It's definitely the frontend that causes the slowdown, and not the code generation.
– Tom
Dec 7 '08 at 7:02
72
...
Sharing link on WhatsApp from mobile website (not application) for Android
...id, WhatsApp web, IOS etc.
You just need to use this format:
<a href="https://api.whatsapp.com/send?phone=whatsappphonenumber&text=urlencodedtext"></a>
UPDATE-- Use this from now(Nov-2018)
<a href="https://wa.me/whatsappphonenumber/?text=urlencodedtext"></a>
U...
How do you use https / SSL on localhost?
... property pages, then start options and assign the start URL - put the new https with the new port (usually 44301 - notice the similarity to port 443) and your project will start correctly from then on.
share
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How to configure multi-module Maven + Sonar + JaCoCo to give merged coverage report?
I've searched up and down the internet for this one. There's lots of half-answers out there, to do with Maven properties such as ${sonar.jacoco.reportPath} , or org.jacoco:jacoco-maven-plugin:prepare-agent or setting maven-surefire-plugin argLine with -javaagent .
...
Quickly find whether a value is present in a C array?
...a graphics routine on a Pentium, using the U and V pipes optimally. Got it down to 6 clock cycles per loop (calculated and measured), and I was very proud of myself. When I tested it against the same thing written in C, the C was faster. I never wrote another line of Intel assembler again.
...
Website screenshots
...age Insight api.
Just need to call it's api with params screenshot=true.
https://www.googleapis.com/pagespeedonline/v1/runPagespeed?
url=https://stackoverflow.com/&key={your_api_key}&screenshot=true
For mobile site view pass &strategy=mobile in params,
https://www.googleapis.com/pag...
Can we have multiple in same ?
... What is the definition of "newer browsers"?
– Tim Down
Dec 17 '12 at 11:07
8
@TimDown - when I...